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starjeff

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Everything posted by starjeff

  1. So, i did all those things: Raising the temp a bit (245-250°C) Closed almost all the open end (actually just the front one...) Fans at 10% And it worked. Thanks a lot!
  2. It's a spool from Makershop, a french 3d printer and filament retailer. It's cheap but not high quality. Since It's my last spool and i doubt the overall quality, i'll try FormFutura ABS filament for my next purchase (2 weeks)
  3. Thanks a lot guys. At first i didn't want to go higher because i feared that it might get me nozzle clogs but it's worth a try. I'll try printing at 245° or even 250°C, with 25% fans and no retractation (I'll have lots of stringing but that's not a major issue). I have to see what i have in my house to build a nice enclosure. I'll keep you posted later in the week for the results.
  4. Your pulleys are not tightened enough. The link of pm_dude will show you how to thighten them to avoid this.
  5. Hi guys, I've spend lot of time there without actually posting anything so here i am. And for my first post... i ask for your help Here's a short story: I own a Ultimaker 2 since november 2014 and i'm having a lot of fun with it. Awesome machine, i made my company buy one so i can play with it at work and at home. For those interested in my work (mostly video-games and movie related, come and see me on Thingiverse and MyMiniFactory: StarJeff) After printing big amounts of PLA, i decided two month ago to give ABS a try. It was tricky at first (especially for the first layer to stick well to the glass) but i push through it and now i don't really want to go back to PLA... ABS looks much better and has way better mechanical use. Here's come the part when i need your help. I'm currently trying my first 1:1 prop from Mass Effect entierly in ABS (I've done all the other one in PLA so far). If anyone's curious, it's the M4-Shuriken. I'll post the updates later on the appropriate section. First small piece looks OK. I seem to have a problem with the larger piece: Bad layer bonding. I can't seem to point out what parameter is causing this even if i do suspect some. Here's my printing parameters Material: ABS from Makershop (French 3d printer and material retailer) Retractation enabled Layer Height: 0.1mm Shell Thickness: 0.8mm B/T Thickness: 1mm Fill density: 30% Print speed: 50mm/s (I'm at the end of the roll so i print slowly) Printing temp: 240°C Bed Temp: 85°C (it's low but i use acetone/ABS juice so it sticks good) Fans: 25% Everything else is default settings. My primary suspects: The fans: I think they may cause excessive retractation but i like them on to reduce oozing. I'll try the same print with the fans off tomorrow to check this. The material: I won't say it's awfully bad quality but it's not premium either. A lot of people complained about the quality of this particular brand so maybe the retraction is material dependent too. The size: More volume means more retractation. What parameters should i change to reduce the retractation when printing big prints? Could you please help me frame the suspect? Thanks in advance! Regards, StarJeff
  6. I had underextrusion problems after the 2nd week of my purshase (UM2). I kept printing at least 10h/day since day one and had zero problem. Two days ago, first underextrusion problems. I thought it was due to ambiant temperature .I had my window open during printing time and it was very cod outside. Naturally, i tried the same pieces but with my window closed and a steady temperature. Still had underextrusion... Printing parameter: Layer: 0.1mm print speed : 80mm/s Temperature of extrusion: 210°C (PLA from makershop) Every thing else default settings Found out this topic and the one about the Atomic Method. I tried the test and it started skiping layers after the 4mm3/s mark... (i died a little inside when it happened) I did the Atomic method a couple of time and tried the test a second time. It started skipping at the 6mm3/s mark. Better but still a fail. One more Atomic method cleaning method with a new PLA (The white Ultimaker one, barely used). New test. but this time at 230°C. Awesome result. No skipping all the way up! Boomshakalaka! Changed back to the PLA i started with... still at 230°C. Got to the 8mm3/s and it got messed up again. I suspect the coil of the makershop spool being responsible for that. It is smaller in diameter compared with the other spool so the coil is more important and must put too much pressure when the filament is moving in the bowden tube. Plus, the actual spool i was using was half way through so the coil started to be pretty important. If anyone could back me up on this one, that would be greatly appreciated. I hope this could help people with the same kind of problems. Anyway, thanks for the help i found here! EDIT from StarJeff: After closer examination of the bowden tube, i found a fine strand of material that could have been responsible for the previous failed test. I removed it and started a print before i went to work. I hope it'll turn out good.
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